CN104485767A - High-voltage motor stator coil insulation structure and process for impregnating and curing high-voltage motor stator coil insulation structure - Google Patents
High-voltage motor stator coil insulation structure and process for impregnating and curing high-voltage motor stator coil insulation structure Download PDFInfo
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- CN104485767A CN104485767A CN201410771173.3A CN201410771173A CN104485767A CN 104485767 A CN104485767 A CN 104485767A CN 201410771173 A CN201410771173 A CN 201410771173A CN 104485767 A CN104485767 A CN 104485767A
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Abstract
The invention relates to a high-voltage motor stator coil insulation structure and s process for impregnating and curing high-voltage motor stator coil insulation structure. The insulation voltage grade of the coil is 6kV grade; the coil is of a strip structure; 240-grade aromatic polyimide enamelled rectangular copper wires are used as tine wires; each turn of wire semi-folded and wound with two layers of polyimide film glass cloth dry mica paper tapes, and is used as an inter-turn insulation layer; a layer which is semi-folded and wound with four layers of polyimide film glass cloth dry mica paper tape is used as a main insulation layer to ground of the coil; the outermost layer which is semi-folded and wound with one layer of ET100-25 glass fabric tape is used as a protection layer; organic silicon solvent-free impregnating resin is used for impregnating and curing the coil by using a VPI (Vacuum Pressure Impregnation) manner; the heat of the insulation structure of the coil impregnated and cured according to the standard GB/T17948 is evaluated and tested; the temperature-resistant index of the insulation structure is evaluated as 244 DEG C; the temperature-resistant grade is evaluated as 220 grades; the highest operation temperature reaches 191 DEG C under 60-year service life; the insulation structure has the highest temperature-resistant grade and longest insulation service life in the similar high-voltage motor insulation technology in China; the insulation technology is the most advanced technology in the high-voltage motor insulation technology in China.
Description
Technical field: the present invention relates to a kind of high-voltage motor stator coil insulation system and dipping thereof and curing process.
Background technology: at present in China, the ordinary high pressure alternating current machine class of insulation is F level, and corresponding maximum operation (service) temperature is 155 DEG C, and for the high-voltage motor product of particular/special requirement, its class of insulation is up to H level, corresponding maximum operation (service) temperature is 180 DEG C; The insulation life of ordinary high pressure motor is designed to 20 years, and specialities are 30 years, and corresponding serviceability temperature is lower than the maximum operation (service) temperature of the corresponding class of insulation.A kind of high-voltage motor stator coil insulation system of this technological invention, service condition require its class of insulation 220 grades and more than, the serviceability temperature that 60 years insulation lifes are corresponding is minimum is 190 DEG C.
Summary of the invention: present disclosure provides a kind of 220 grades of long life high-voltage insulation of stator coil of motor structures, according to standard GB/T/T17948, hot qualification test is carried out to it, the heatproof index of this insulation system of evaluation result 244 DEG C, the class of insulation 220 grades, the maximum operation (service) temperature 191 DEG C that 60 years insulation lifes are corresponding.
Technical scheme of the present invention is: a kind of high-voltage motor stator coil insulation system, the electric pressure of coil insulation is 6kV level, coil is bar formula structure, select 240 grades of aromatic polyimide enameling copper strap wires as strand (1), often prop up coil to be made up of two circle circle lines, every circle line half changes wrapped two strata imide membrane glass cloth dry mica paper tapes as turn-to-turn insulation layer (2); Being grouped together by circle line after insulation partly, repeatedly wrapped four strata imide membrane glass cloth dry mica paper tapes are as main insulating layer (3), and outermost layer half changes wrapped one deck ET100-25 glass tape as protective layer (4).
Method and technology scheme of the present invention is: a kind of dipping of high-voltage motor stator coil insulation system and curing process, with organosilicon solvent-free impregnating resin dipping high-voltage motor stator coil, dipping and curing process as follows:
With organosilicon solvent-free impregnating resin vacuum pressure impregnation high-voltage motor stator coil, dipping and curing process as follows:
1) high-voltage motor stator coil puts into baker preheating 150 DEG C ± 5 DEG C, insulation 8 hours after temperature;
2) leaching tank is proceeded to when high-voltage motor stator coil is cooled to 65 DEG C ± 5 DEG C in baker;
3) soak tank to vacuumize, vacuum degree is less than 100 handkerchiefs, protects vacuum time 4 hours;
4) under this vacuum state, organosilicon solvent-free impregnating resin is inputted to leaching tank, when 25 DEG C ± 3 DEG C, resin viscosity is less than 3000 centipoises, resin temperature 60 DEG C ~ 70 DEG C, resin liquid level is higher than high-voltage motor stator coil peak 80mm ~ 100mm, be evacuated down to 200 handkerchiefs after stable resin, keep 1 hour;
5) in leaching tank, input the nitrogen of 99.999% purity, make leaching tank remove vacuum to 0 MPa;
6) use the nitrogen of 99.999% purity to the pressurization of leaching tank, first stage pressure is forced into 0.04 MPa by 0 MPa, 10 minutes dwell times;
7) second stage pressure is forced into 0.1 MPa by 0.04 MPa, 20 minutes dwell times;
8) phase III pressure is forced into 0.3 MPa by 0.1 MPa, 30 minutes dwell times;
9) fourth stage pressure is forced into 0.6 MPa by 0.3 MPa, 180 minutes dwell times;
10) high-voltage motor stator coil is in leaching tank after pressurize to time, back paint is started when pressure being reduced to 0.19 MPa ~ 0.21 MPa, when pressure stops back paint lower than during 0.1 MPa or when back paint is slow, the nitrogen of 99.999% purity is used to be forced into 0.19 MPa ~ 0.21 MPa to leaching tank, back paint again, repetitive operation, until all impregnating resin is back in storage paint can;
11) after back paint terminates, high-voltage motor stator coil drip-dry 25 minutes ~ 35 minutes in impregnation tank;
12) drying oven is preheating to temperature 100 DEG C ~ 110 DEG C, high-voltage motor stator coil after drip-dry is proceeded to rapidly in preheated drying oven, furnace temperature is raised to 240 DEG C ~ 260 DEG C with the heating rate of 25 DEG C/h, furnace temperature is reduced to 230 DEG C ± 5 DEG C when workpiece temperature reaches 220 DEG C, be incubated 48 hours, cooling high-voltage motor stator coil of closing the door after the time can be come out of the stove to when less than 80 DEG C;
13) according to standard GB/T/T17948, the hot qualification test of insulation system is carried out to the coil after dipping solidification, the heatproof index of evaluation insulation system is more than 244 DEG C, the evaluation of its temperature resistant grade reaches 220 grades, infers that the maximum operating temperature under 60 years service lives of insulation system reaches 191 DEG C.
According to standard GB/T/T17948, the hot qualification test of insulation system is carried out to the coil after dipping solidification, the heatproof index of evaluation insulation system is more than 244 DEG C, the evaluation of its temperature resistant grade reaches 220 grades, infers that the maximum operating temperature under 60 years service lives of insulation system reaches 191 DEG C.The operating temperature 191 DEG C that the heatproof index 244 DEG C of this insulation system, the class of insulation 220 grades, 60 year life-span are corresponding is the insulation system that in current domestic high-voltage motor stator coil insulation system, heatproof index is the highest, the class of insulation is the highest, insulation life is the longest.
Technological merit of the present invention:
At present in China, the class of insulation of ordinary high pressure alternating current machine insulation system is 155, and for the high-voltage motor product of particular/special requirement, the class of insulation of its insulation system can reach 180 grades, and general insulation life is designed to 20 years, and specialities are 30 years.The invention provides a kind of 220 grades of long life high-voltage insulation of stator coil of motor structures, the electric pressure of coil insulation is 6kV level, coil is bar formula structure, select 240 grades of aromatic polyimide enameling copper strap wires as strand, select polyimide film glass cloth dry mica paper tape as insulating material, every circle line partly repeatedly holds two strata imide membrane glass cloth dry mica paper tapes as turn-to-turn insulation layer; Half changes wrapped four-level membrane glass cloth dry mica paper tape as coil main insulating layer over the ground; outermost layer half changes wrapped one deck ET100-25 glass tape as protective layer; organosilicon solvent-free impregnating resin is used to carry out vacuum pressure impregnation and solidification to coil; make the globality of insulation system best, electrical insulation properties is best.According to standard GB/T17948, the hot qualification test of insulation system is carried out to the coil after dipping solidification, the heatproof index of insulation system is assessed as more than 244 DEG C, temperature resistant grade is assessed as 220 grades, maximum operating temperature under 60 years service life reaches 191 DEG C, being the insulation system that in current domestic similar high-voltage motor insulated technology, temperature resistant grade is the highest, insulation life is the longest, is also state-of-the-art insulation technology in current domestic high-voltage motor insulated technology.
Accompanying drawing explanation
Fig. 1 high-voltage motor stator coil structure cut-away view
Fig. 2 is impregnation technology table 1
The present invention is a kind of high-voltage motor stator coil insulation system and dipping thereof and curing process, and embodiment is as follows:
A kind of high-voltage motor stator coil insulation system, the electric pressure of coil insulation is 6kV level, coil is bar formula structure, select 240 grades of aromatic polyimide enameling copper strap wires as strand 1, often prop up coil to be made up of two circle circle lines, every circle line half changes wrapped two strata imide membrane glass cloth dry mica paper tapes as turn-to-turn insulation layer 2; Being grouped together by circle line after insulation partly, repeatedly wrapped four strata imide membrane glass cloth dry mica paper tapes are as main insulating layer 3, and repeatedly wrapped one deck ET100-25 glass tape is as protective layer 4 for outermost layer half, and insulation system as shown in Figure 1.
The dipping of high-voltage motor stator coil insulation system and a curing process, with organosilicon solvent-free impregnating resin vacuum pressure impregnation high-voltage motor stator coil, dipping and curing process as follows:
As shown in Figure 2, with organosilicon solvent-free impregnating resin vacuum pressure impregnation high-voltage motor stator coil, dipping and curing process as follows:
1) high-voltage motor stator coil puts into baker preheating 150 DEG C ± 5 DEG C, insulation 8 hours after temperature;
2) leaching tank is proceeded to when high-voltage motor stator coil is cooled to 65 DEG C ± 5 DEG C in baker;
3) soak tank to vacuumize, vacuum degree is less than 100 handkerchiefs, protects vacuum time 4 hours;
4) under this vacuum state, organosilicon solvent-free impregnating resin is inputted to leaching tank, when 25 DEG C ± 3 DEG C, resin viscosity is less than 3000 centipoises, resin temperature 60 DEG C ~ 70 DEG C, resin liquid level is higher than high-voltage motor stator coil peak 80mm ~ 100mm, be evacuated down to 200 handkerchiefs after stable resin, keep 1 hour;
5) in leaching tank, input the nitrogen of 99.999% purity, make leaching tank remove vacuum to 0 MPa;
6) use the nitrogen of 99.999% purity to the pressurization of leaching tank, first stage pressure is forced into 0.04 MPa by 0 MPa, 10 minutes dwell times;
7) second stage pressure is forced into 0.1 MPa by 0.04 MPa, 20 minutes dwell times;
8) phase III pressure is forced into 0.3 MPa by 0.1 MPa, 30 minutes dwell times;
9) fourth stage pressure is forced into 0.6 MPa by 0.3 MPa, 180 minutes dwell times;
10) high-voltage motor stator coil is in leaching tank after pressurize to time, back paint is started when pressure being reduced to 0.19 MPa ~ 0.21 MPa, when pressure stops back paint lower than during 0.1 MPa or when back paint is slow, the nitrogen of 99.999% purity is used to be forced into 0.19 MPa ~ 0.21 MPa to leaching tank, back paint again, repetitive operation, until all impregnating resin is back in storage paint can;
11) after back paint terminates, high-voltage motor stator coil drip-dry 25 minutes ~ 35 minutes in impregnation tank;
12) drying oven is preheating to temperature 100 DEG C ~ 110 DEG C, high-voltage motor stator coil after drip-dry is proceeded to rapidly in preheated drying oven, furnace temperature is raised to 240 DEG C ~ 260 DEG C with the heating rate of 25 DEG C/h, furnace temperature is reduced to 230 DEG C ± 5 DEG C when workpiece temperature reaches 220 DEG C, be incubated 48 hours, cooling high-voltage motor stator coil of closing the door after the time can be come out of the stove to when less than 80 DEG C;
13) according to standard GB/T/T17948, the hot qualification test of insulation system is carried out to the coil after dipping solidification, the heatproof index of evaluation insulation system is more than 244 DEG C, the evaluation of its temperature resistant grade reaches 220 grades, infers that the maximum operating temperature under 60 years service lives of insulation system reaches 191 DEG C.
Claims (2)
1. a high-voltage motor stator coil insulation system, it is characterized in that: the electric pressure of coil insulation is 6kV level, coil is bar formula structure, select 240 grades of aromatic polyimide enameling copper strap wires as strand (1), often prop up coil to be made up of two circle circle lines, every circle line half changes wrapped two strata imide membrane glass cloth dry mica paper tapes as turn-to-turn insulation layer (2); Being grouped together by circle line after insulation partly, repeatedly wrapped four strata imide membrane glass cloth dry mica paper tapes are as main insulating layer (3), and outermost layer half changes wrapped one deck ET100-25 glass tape as protective layer (4).
2. the dipping of high-voltage motor stator coil insulation system and a curing process, is characterized in that: with organosilicon solvent-free impregnating resin vacuum pressure impregnation high-voltage motor stator coil, dipping and curing process as follows:
1) high-voltage motor stator coil puts into baker preheating 150 DEG C ± 5 DEG C, insulation 8 hours after temperature;
2) leaching tank is proceeded to when high-voltage motor stator coil is cooled to 65 DEG C ± 5 DEG C in baker;
3) soak tank to vacuumize, vacuum degree is less than 100 handkerchiefs, protects vacuum time 4 hours;
4) under this vacuum state, organosilicon solvent-free impregnating resin is inputted to leaching tank, when 25 DEG C ± 3 DEG C, resin viscosity is less than 3000 centipoises, resin temperature 60 DEG C ~ 70 DEG C, resin liquid level is higher than high-voltage motor stator coil peak 80mm ~ 100mm, be evacuated down to 200 handkerchiefs after stable resin, keep 1 hour;
5) in leaching tank, input the nitrogen of 99.999% purity, make leaching tank remove vacuum to 0 MPa;
6) use the nitrogen of 99.999% purity to the pressurization of leaching tank, first stage pressure is forced into 0.04 MPa by 0 MPa, 10 minutes dwell times;
7) second stage pressure is forced into 0.1 MPa by 0.04 MPa, 20 minutes dwell times;
8) phase III pressure is forced into 0.3 MPa by 0.1 MPa, 30 minutes dwell times;
9) fourth stage pressure is forced into 0.6 MPa by 0.3 MPa, 180 minutes dwell times;
10) high-voltage motor stator coil is in leaching tank after pressurize to time, back paint is started when pressure being reduced to 0.19 MPa ~ 0.21 MPa, when pressure stops back paint lower than during 0.1 MPa or when back paint is slow, the nitrogen of 99.999% purity is used to be forced into 0.19 MPa ~ 0.21 MPa to leaching tank, back paint again, repetitive operation, until all impregnating resin is back in storage paint can;
11) after back paint terminates, high-voltage motor stator coil drip-dry 25 minutes ~ 35 minutes in impregnation tank;
12) drying oven is preheating to temperature 100 DEG C ~ 110 DEG C, high-voltage motor stator coil after drip-dry is proceeded to rapidly in preheated drying oven, furnace temperature is raised to 240 DEG C ~ 260 DEG C with the heating rate of 25 DEG C/h, furnace temperature is reduced to 230 DEG C ± 5 DEG C when workpiece temperature reaches 220 DEG C, be incubated 48 hours, cooling high-voltage motor stator coil of closing the door after the time can be come out of the stove to when less than 80 DEG C;
13) according to standard GB/T/T17948, the hot qualification test of insulation system is carried out to the coil after dipping solidification, the heatproof index of evaluation insulation system is more than 244 DEG C, the evaluation of its temperature resistant grade reaches 220 grades, infers that the maximum operating temperature under 60 years service lives of insulation system reaches 191 DEG C.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795923A (en) * | 2015-04-22 | 2015-07-22 | 南车株洲电力机车研究所有限公司 | High-heat-conductivity insulating structure and manufacturing method thereof |
| CN104901493A (en) * | 2015-06-11 | 2015-09-09 | 天津市天发重型水电设备制造有限公司 | One-time hydraulic forming method for major insulation and anti-corona layer of high-voltage armature winding |
| CN109337428A (en) * | 2018-10-17 | 2019-02-15 | 陕西航空电气有限责任公司 | A kind of fire resistant polyimide insulating impregnating varnish and its preparation method and application |
| CN110945756A (en) * | 2017-07-21 | 2020-03-31 | 西门子交通有限公司 | With shaped coils wound in advance with mica tape |
| CN110999036A (en) * | 2017-07-21 | 2020-04-10 | 西门子交通有限公司 | Coil with a cover strip made of a high-performance material |
| CN111463978A (en) * | 2020-04-08 | 2020-07-28 | 六安强力电机有限公司 | Motor coil paint dipping method for motor production |
| CN112466663A (en) * | 2020-11-09 | 2021-03-09 | 太仓优盛电子有限公司 | High-temperature dipping treatment process of transformer |
| CN112706356A (en) * | 2020-12-08 | 2021-04-27 | 山东齐鲁电机制造有限公司 | Generator stator bar mold type single VPI impregnation curing molding process |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04207940A (en) * | 1990-11-30 | 1992-07-29 | Shinko Electric Co Ltd | Insulation treating method for rotor coil |
| CN101864059A (en) * | 2010-06-01 | 2010-10-20 | 苏州巨峰电气绝缘系统股份有限公司 | Heat-resistant epoxy anhydride resin suitable for vacuum pressure impregnation (VPI) and preparing method and application thereof |
| CN201717698U (en) * | 2010-06-30 | 2011-01-19 | 苏州巨峰电气绝缘系统股份有限公司 | Reduction insulation structure suitable for high-voltage motor |
| CN102332764A (en) * | 2011-09-23 | 2012-01-25 | 株洲南车时代电气股份有限公司 | Permanent-magnet motor rotor and fixing method thereof |
| CN102983692A (en) * | 2012-12-24 | 2013-03-20 | 哈尔滨电气动力装备有限公司 | Ultra-thin insulation process for major insulation of high-voltage motor stator |
| CN102983654A (en) * | 2012-05-21 | 2013-03-20 | 上海同立电工材料有限公司 | 6 kilovolt level high-voltage motor insulation structure and manufacturing method thereof |
| CN204243949U (en) * | 2014-12-15 | 2015-04-01 | 哈尔滨电气动力装备有限公司 | High-voltage motor stator coil insulation system |
-
2014
- 2014-12-15 CN CN201410771173.3A patent/CN104485767B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04207940A (en) * | 1990-11-30 | 1992-07-29 | Shinko Electric Co Ltd | Insulation treating method for rotor coil |
| CN101864059A (en) * | 2010-06-01 | 2010-10-20 | 苏州巨峰电气绝缘系统股份有限公司 | Heat-resistant epoxy anhydride resin suitable for vacuum pressure impregnation (VPI) and preparing method and application thereof |
| CN201717698U (en) * | 2010-06-30 | 2011-01-19 | 苏州巨峰电气绝缘系统股份有限公司 | Reduction insulation structure suitable for high-voltage motor |
| CN102332764A (en) * | 2011-09-23 | 2012-01-25 | 株洲南车时代电气股份有限公司 | Permanent-magnet motor rotor and fixing method thereof |
| CN102983654A (en) * | 2012-05-21 | 2013-03-20 | 上海同立电工材料有限公司 | 6 kilovolt level high-voltage motor insulation structure and manufacturing method thereof |
| CN102983692A (en) * | 2012-12-24 | 2013-03-20 | 哈尔滨电气动力装备有限公司 | Ultra-thin insulation process for major insulation of high-voltage motor stator |
| CN204243949U (en) * | 2014-12-15 | 2015-04-01 | 哈尔滨电气动力装备有限公司 | High-voltage motor stator coil insulation system |
Cited By (15)
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| CN104795923A (en) * | 2015-04-22 | 2015-07-22 | 南车株洲电力机车研究所有限公司 | High-heat-conductivity insulating structure and manufacturing method thereof |
| CN104795923B (en) * | 2015-04-22 | 2018-08-07 | 南车株洲电力机车研究所有限公司 | High heat conductive insulating structure and preparation method thereof |
| CN104901493A (en) * | 2015-06-11 | 2015-09-09 | 天津市天发重型水电设备制造有限公司 | One-time hydraulic forming method for major insulation and anti-corona layer of high-voltage armature winding |
| CN104901493B (en) * | 2015-06-11 | 2017-12-12 | 天津市天发重型水电设备制造有限公司 | High pressure armature winding major insulation and anti-halo layer hydraulic pressure one-step moulding method |
| CN110999036A (en) * | 2017-07-21 | 2020-04-10 | 西门子交通有限公司 | Coil with a cover strip made of a high-performance material |
| CN110945756A (en) * | 2017-07-21 | 2020-03-31 | 西门子交通有限公司 | With shaped coils wound in advance with mica tape |
| CN110945756B (en) * | 2017-07-21 | 2022-07-08 | 西门子交通有限公司 | With shaped coils wound in advance with mica tape |
| CN110999036B (en) * | 2017-07-21 | 2022-07-12 | 西门子交通有限公司 | Coil with a cover strip made of a high-performance material |
| US11496011B2 (en) | 2017-07-21 | 2022-11-08 | Siemens Mobility GmbH | Form-wound coil having previous winding of mica tape |
| CN109337428A (en) * | 2018-10-17 | 2019-02-15 | 陕西航空电气有限责任公司 | A kind of fire resistant polyimide insulating impregnating varnish and its preparation method and application |
| CN111463978A (en) * | 2020-04-08 | 2020-07-28 | 六安强力电机有限公司 | Motor coil paint dipping method for motor production |
| CN111463978B (en) * | 2020-04-08 | 2021-07-30 | 六安强力电机有限公司 | Motor coil paint dipping method for motor production |
| CN112466663A (en) * | 2020-11-09 | 2021-03-09 | 太仓优盛电子有限公司 | High-temperature dipping treatment process of transformer |
| CN112706356A (en) * | 2020-12-08 | 2021-04-27 | 山东齐鲁电机制造有限公司 | Generator stator bar mold type single VPI impregnation curing molding process |
| CN112706356B (en) * | 2020-12-08 | 2023-05-26 | 山东齐鲁电机制造有限公司 | Single-branch VPI impregnation curing molding process of generator stator bar mold type |
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